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Retirement and Postretirement Plans (Tables)
 9 Months Ended
Sep. 30, 2016
Compensation and Retirement Disclosure [Abstract]  
Schedule of Net Benefit (Income) Costs
The following tables provide the components of net periodic benefit (income) cost for the Company’s benefit plans for the three and nine month periods ended September 30, 2016 and 2015:

 
Three Months Ended
 
Pension Benefits
 
Other Benefits
(In thousands)
September 30,
2016
 
September 30,
2015
 
September 30,
2016
 
September 30,
2015
Service cost
$
—

 
$
—

 
$
—

 
$
25

Interest cost
4,650

 
5,729

 
125

 
250

Expected return on plan assets
(6,950
)
 
(7,727
)
 
—

 
—

Amortization of net loss
—

 
200

 
(25
)
 
—

Net periodic benefit (income) cost
$
(2,300
)
 
$
(1,798
)
 
$
100

 
$
275


 
Nine Months Ended
 
Pension Benefits
 
Other Benefits
(In thousands)
September 30,
2016
 
September 30,
2015
 
September 30,
2016
 
September 30,
2015
Service cost
$
—

 
$
—

 
$
—

 
$
75

Interest cost
13,950

 
17,185

 
525

 
750

Expected return on plan assets
(20,850
)
 
(23,180
)
 
—

 
—

Amortization of net loss
—

 
600

 
(75
)
 
—

Net periodic benefit (income) cost
$
(6,900
)
 
$
(5,395
)
 
$
450

 
$
825